Med school is like doing two undergrads at the same time. Not in a sexual manner.

Great answer.
On a more serious note, in med school, you drown in detail rather than in overarching concepts. You may think, oh yeah, I know vancomycin, it's an antibiotic, it inhibits cell wall synthesis... and your test question will be, "What sequence does vancomycin bind to in order to halt cell wall synthesis?" And you'll swear under your breath. What I mean to say is, you have to go like 5 steps down in detail, for every drug in pharm, to be able to answer all the questions. Every class is like that.
Thanks for the response, ChiDO. How is the social environment at a med school? Are people more or less social? Are there are a lot of study parties?
Lastly, is it true that there is a lot of drama? Is there a lot of gossip too?
There's a somewhat normal range of personalities. I would say people are less social in general just because the workload is so much heavier than in undergrad. Apart from that, there's a solid crew of folks in my class who like to hit the clubs on weekends... and maybe trivia or something social like that one other night a week. Definitely plenty of parties if that's your thing.
There are also nerds (like me) who answer questions on SDN. *cough*
There's drama and gossip just like in high school, college, and in a work environment. There's a group of people who all know each other, and when they get together, they talk about everybody else. I don't think it's any better or worse than anywhere else; but that'll depend on the other people in your med school class.
Why, what are you expecting? Grey's Anatomy?